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Temporal isolating mechanism
Geographical isolating mechanism
Behavioral isolating mechanism
Mechanical isolating mechanism
Postzygotic isolating mechanism
A prezygotic isolating mechanism
A postzygotic isolating mechanism
Gradualism
Polyploidy
Sexual selection
Geographic isolation
Gametic incompatibility
Hybrid disadvantage
Hybrid sterility
Natural selection directs the course of evolution by preserving traits acquired during an individual’s lifetime
The offspring of individuals that are better adapted to the environment will make up a larger proportion of the next generation
Natural selection depends on the genetic variability in a population, which in turn arises through mutations
Natural selection acts to preserve favourable traits and eliminate unfavourable traits
Natural selection leads to adaptive evolutionary change
Gene flow
Genetic drift
Disruptive selection
Natural selection
Mutation
Beneficial mutations
Gene flow
Disruptive selection
Genetic drift
Natural selection
Genetic drift
Directional selection
Natural selection
Gene flow
Mutation
The founder effect
Migration
A genetic bottleneck
Gene flow
Natural selection
Natural selection
Genetic drift
Gene flow
Genetic polymorphism
Migration
Stabilizing
Directional
Disruptive
Frequency dependent
Abnormal
The least common phenotypes
The average phenotype
The most conspicuous phenotypes
The most common phenotype
The most camouflaged phenotype
Directional
Disruptive
Stabilizing
Frequency-dependent
Natural
Genetic drift
The founder effect
Directional selection
Disruptive selection
Stabilizing selection
Hybrid sterility
Genetic isolation
Sexual isolation
Mechanical isolation
Temporal isolation
Behavioral isolation
Mechanical isolation
Gametic isolation
Temporal isolation
Hybrid breakdown
Behavioral isolation
Gametic isolation
Hybrid isolation
Temporal isolation
Hybrid sterility
Sympatric speciation
Hybridization
Allopolypoidy
Allopatric speciation
Adaptive radiation
Gametic isolation
A prezygotic barrier
Hybrid inviability
A postzygotic barrier
Artificial selection
Directional selection
Stabilizing selection
Artificial and directional selection only
Artificial, directional and stabilizing selection
Sterile offspring
Ecological isolation
Feeding behaviour
Gametic incompatibility
Timing of courtship display
Habitat isolation
Temporal isolation
Hybrid sterility
Behavioural isolation
Gamete incompatibility
Ecological isolation
Temporal isolation
Behavioural isolation
Mechanical isolation
Gametic isolation
Ecological isolation
Temporal isolation
Behavioural isolation
Gametic isolation
Postzygotic isolation
Mechanical isolation
Gametic isolation
Hybrid in-viability
Hybrid sterility
Hybrid breakdown
Disruptive selection
Stabilizing selection
Directional selection
None of these is correct.
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